Carbonated water, amino blend (l-threonine, l-leucine, l-citrulline, l-theanine, l-alanyl-l-glutamine, micronized taurine, l-lysine hydrochloride), citric acid, malic acid, sodium citrate, potassium sorbate and potassium benzoate (as preservatives), natural and artificial flavor, sucralose, caffeine (from tea leaf and/or coffee bean), potassium chloride, magnesium phosphate.
Manufacturer likely did not include an allergen statement; however, please double-check the product packaging and/or contact the manufacturer if you have a severe food allergy.